f0eb9985b9
This example adds functionality to support basic communication in RS485 networks using Modbus protocol. This example uses FreeModbus stack and regular UART driver API to communicate in RS485 half duplex mode. Added initial support of modbus controller pure C api to access device parameters over Modbus transport. Move freemodbus stack and port files into components folder Move the modbus_controller interface into components idf folder Source files updated after review. Add modbus interface documentation docs/en/api-reference/protocols/modbus.rst porttimer.c: fix bug with timer1 selected in the Kconfig Add support of cmake system (added cmake files) Closes https://github.com/espressif/esp-idf/issues/858
83 lines
3.5 KiB
C
83 lines
3.5 KiB
C
/*
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* FreeModbus Libary: A portable Modbus implementation for Modbus ASCII/RTU.
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* Copyright (c) 2006 Christian Walter <wolti@sil.at>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* File: $Id: mbproto.h,v 1.14 2006/12/07 22:10:34 wolti Exp $
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*/
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#ifndef _MB_PROTO_H
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#define _MB_PROTO_H
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#ifdef __cplusplus
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PR_BEGIN_EXTERN_C
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#endif
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/* ----------------------- Defines ------------------------------------------*/
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#define MB_ADDRESS_BROADCAST ( 0 ) /*! Modbus broadcast address. */
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#define MB_ADDRESS_MIN ( 1 ) /*! Smallest possible slave address. */
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#define MB_ADDRESS_MAX ( 247 ) /*! Biggest possible slave address. */
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#define MB_FUNC_NONE ( 0 )
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#define MB_FUNC_READ_COILS ( 1 )
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#define MB_FUNC_READ_DISCRETE_INPUTS ( 2 )
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#define MB_FUNC_WRITE_SINGLE_COIL ( 5 )
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#define MB_FUNC_WRITE_MULTIPLE_COILS ( 15 )
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#define MB_FUNC_READ_HOLDING_REGISTER ( 3 )
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#define MB_FUNC_READ_INPUT_REGISTER ( 4 )
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#define MB_FUNC_WRITE_REGISTER ( 6 )
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#define MB_FUNC_WRITE_MULTIPLE_REGISTERS ( 16 )
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#define MB_FUNC_READWRITE_MULTIPLE_REGISTERS ( 23 )
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#define MB_FUNC_DIAG_READ_EXCEPTION ( 7 )
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#define MB_FUNC_DIAG_DIAGNOSTIC ( 8 )
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#define MB_FUNC_DIAG_GET_COM_EVENT_CNT ( 11 )
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#define MB_FUNC_DIAG_GET_COM_EVENT_LOG ( 12 )
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#define MB_FUNC_OTHER_REPORT_SLAVEID ( 17 )
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#define MB_FUNC_ERROR ( 128 )
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/* ----------------------- Type definitions ---------------------------------*/
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typedef enum
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{
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MB_EX_NONE = 0x00,
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MB_EX_ILLEGAL_FUNCTION = 0x01,
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MB_EX_ILLEGAL_DATA_ADDRESS = 0x02,
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MB_EX_ILLEGAL_DATA_VALUE = 0x03,
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MB_EX_SLAVE_DEVICE_FAILURE = 0x04,
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MB_EX_ACKNOWLEDGE = 0x05,
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MB_EX_SLAVE_BUSY = 0x06,
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MB_EX_MEMORY_PARITY_ERROR = 0x08,
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MB_EX_GATEWAY_PATH_FAILED = 0x0A,
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MB_EX_GATEWAY_TGT_FAILED = 0x0B
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} eMBException;
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typedef eMBException( *pxMBFunctionHandler ) ( UCHAR * pucFrame, USHORT * pusLength );
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typedef struct
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{
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UCHAR ucFunctionCode;
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pxMBFunctionHandler pxHandler;
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} xMBFunctionHandler;
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#ifdef __cplusplus
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PR_END_EXTERN_C
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#endif
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#endif
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